| 摘要 |
FIELD: engineering of technological testing equipment and controlling-diagnostic equipment. ^ SUBSTANCE: technological system of internal combustion engine contains device for remote forced suck-out of exhaust gases of internal combustion engine in one of testing chambers of testing acoustic complex, testing chambers of testing acoustic complex contain, at least, two autonomous portions of outlet pipelines for exhaust gases from two testing chamber, while utilized technological system has common shared ventilation channel, equipped with air funnel plant and muffler, while to autonomous pipelines portions are connected to channel, belonging to separate testing chambers of testing acoustic complex, wherein stationary technological mufflers of aero-gas-dynamic noise are mounted, while at least in one of autonomous ventilation portions of pipelines of an individual testing chamber of testing acoustic complex exhaust gases of tested internal combustion engine are forced out without utilization of remote forced suck-out device elements and at least one of autonomous technological systems has body shaped as a rectangular parallelepiped. Side walls of body, on which inlet and outlet pipes of technological muffler are held, connected to pipelines of technological system, axes of which are mutually parallel and perpendicular to side walls of body, are lined with sound-absorbing panels. Inlet pipe is held in geometric center of side walls of technological muffler body. End portion of free section of inlet pipe positioned inside the chamber of technological muffler is partially enveloped with forming of labyrinth channel by additional ring-shaped screening element of barrel type, bottom of which is a portion of side wall of technological muffler body, and positioned in engaged manner coaxially to portion of inlet pipe, enveloped by screening element. Funnel pipe is mounted at opposite side wall of technological muffler body, while axis of funnel pipe is perpendicular to side walls of body and is positioned at distance equal to one fourth of length of side wall edge. ^ EFFECT: decreased acoustic pollution of environment. ^ 1 cl, 7 dwg |
